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see DruzeDruze
or Druse
, religious community of Syria, Lebanon, Israel, and Jordan, with important overseas branches in the Americas and Australia. The religious leadership prefers the name Muwahhidun (Unitarians).
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(1) A form of natural crystalline mineral aggregate. It is an accumulation of free crystals that have grown from one end (crystal face or edge) on the walls of cracks or closed cavities in rocks. The free part of the crystals is well defined, with the main direction of growth close to the perpendicular of the growth surface. Druses of quartz, amethyst, calcite, and stibnite often occur.

(2) In plants, an inclusion of calcium oxalate crystals that form in the cells of many plants during their life processes (for example, in the stems of the linden and in the stalks of begonia and dock leaves).


A small cavity in a rock or vein encrusted with aggregates of crystals of the same minerals which commonly constitute the enclosing rock.
References in periodicals archive ?
patients who had drusen in both eyes and the treated eye had the potential for a two or more line improvement), the percentage of eyes that improved by two or more lines, reached 24.
11) Common constituents of drusen include RPE remnants, complement, lipids, lipoproteins, dendritic cell processes, cholesterol esters, fibrinogen, Class II antigens and immunoglobulins.
Pre-treatment with low intensity laser treatment in patients with large drusen secondary to AMD was investigated by the CAPT research group, but no clinically significant, beneficial, or harmful effect was found.
Cole Eye Institute researchers collected samples of drusen from 18 healthy donor eyes and five AMD-afflicted donor eyes using a new isolation technique developed by Dr.
The death or degeneration of these cells is characterized by the presence of drusen, dots of yellow crystalline deposits that develop within the macula, and thinning of the macula.
Secondary measures will include: progression to advanced neovascular or wet AMD, progression of GA area based on autofluorescence, changes in contrast sensitivity, drusen area, and best-corrected visual acuity, and number of eyes developing advanced AMD.
In macular degeneration, abnormal deposits called drusen develop in the retina and macula, damaging this cellular layer.
Over the past 18 months, multiple scientific publications have strongly linked variants of genes encoding components of the complement system, notably complement factors B and H, with a predisposition toward ARMD and drusen formation.
Secondary measures will include: change in area of GA in each eye, as measured by fundus photo grading, progression to advanced neovascular or wet AMD, progression of GA area based on autofluorescence, changes in contrast sensitivity, and change in drusen area.
A typical appearance in early AMD is patchy loss of macular sensitivity in which localised areas of reduced sensitivity are associated with drusen.
Results: Dietary lutein/zeaxanthin intake was inversely associated with neovascular AMD, geographic atrophy, and large or extensive intermediate drusen, when comparing the highest vs.
When age was considered, men and women had approximately the same number of drusen.